Home / 784,574.73-1,079,315.51-687,340.71

Finding the Fourth Proportional to 784,574.73, 1,079,315.51 and 687,340.71

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Solution

The fourth proportional to 784,574.73, 1,079,315.51 and 687,340.71 is: 945,553.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,574.73 : 1,079,315.51 = 687,340.71 : x
  2. Step 2: Convert to fraction form
    784,574.73/1,079,315.51 = 687,340.71/x
  3. Step 3: Cross multiply
    784,574.73x = 1,079,315.51 × 687,340.71
  4. Step 4: Simplify right side
    784,574.73x = 741,857,485,520.71
  5. Step 5: Solve for x
    x = 741,857,485,520.71/784,574.73
  6. Step 6: Final answer
    x = 945,553.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.